澳大利亚曾引种仙人掌做篱笆，导致仙人掌在该国泛滥，该国控制仙人掌种群数量最合适的

论述教师职业角色的多样化。

公共政策分析的主体包括（）

A．职业政策分析人员

B．政策执行者

C．标准设立者

D．目标群体

E．决策者

I was a single parent of four small children, working at a low paid job. Money was always tight, but we had a (1) over our heads, food on the table, clothes on our backs, and if not a lot, always (2) . Not knowing we were poor, my kids just thought I was (3) . I’ve always been glad about that.

It was Christmas time, and although there wasn’t (4) for a lot of gifts, we planned to celebrate with a family party. But the big (5) for the kids was the fun of Christmas (6) .

They planned weeks ahead of time, asking (7) what they wanted for Christmas. Fortunately, I had saved MYM120 for (8) to share by all five of us.

The big (9) arrived. I gave each kid a twenty-dollar bill and (10) them to look for gifts of about four dollars each. Then everyone scattered. We had two hours to shop; then we would (11) back at the "Santa’s Workshop"

Driving home, everyone was in high Christmas spirits, (12) my younger daughter, Ginger, who was unusually (13) She had only one small, flat bag with a few candies—fiftycent candies I was so angry, but I didn’t say anything (14) we got home. I called her into my bedroom and closed the door, (15) to be angry again. This is what she told me.

"I was looking (16) thinking of what to buy, and I (17) to read the little cards on the ’Giving Trees’. One was for a little girl, four years old, and all she (18) for Christmas was a doll. So I took the card off the tree and (19) the doll for her. We have so much and she doesn’t have anything. "

I never felt so (20) as I did that day.

6（）。

A.little 

B.less 

C.enough 

D.more

烟草商业提供卷烟的配送、订货等服务，属于（）。

A.服务业

B.制造业

C.既是服务业也是制造业

D.以上都不是

盾构施工一般不会采用以下材料作为同步注浆原材（）。

A、水泥

B、粉煤灰

C、膨润土

D、粗砂